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Published on: October 17, 2019
Individual differences in speed-accuracy trade-off influence social decision-making in dyads.
Kiri Kuroda1,2,3, Alan N Tump1,4,5, Ralf H J M Kurvers1,4,6
1Center for Adaptive Rationality, Max Planck Institute for Human Development, Berlin 14195, Germany.
In social decisions, faster individuals adapt to be more accurate, while slower individuals use less social information. This shows how personal speed-accuracy preferences influence group decision-making dynamics.
Area of Science:
- Cognitive Psychology
- Social Neuroscience
- Decision Science
Background:
- Speed-accuracy trade-offs are crucial for balancing information gathering and decision speed.
- Individual speed-accuracy preferences are well-studied, but their impact in social decision-making is unclear.
- Faster, potentially less accurate, social decisions can exert greater influence.
Purpose of the Study:
- To investigate how individual differences in speed-accuracy trade-off preferences affect dyadic decision-making.
- To understand the cognitive mechanisms underlying social adjustments in decision strategies.
- To determine if social decision-making performance is compromised by differing individual preferences.
Main Methods:
- An interactive online experiment involving a perceptual task.
- Drift-diffusion modelling to estimate individual cognitive parameters (drift rates, decision thresholds).
- Comparison of individual performance against paired decision-making in real-time.
Main Results:
- Pair accuracy was primarily determined by the faster, more error-prone member.
- Faster decision-makers increased their decision thresholds in social settings, enhancing accuracy.
- Slower decision-makers reduced their reliance on social information, adapting to their partner's speed.
Conclusions:
- Individuals dynamically adjust their decision strategies based on their partner's speed-accuracy preferences.
- Social decision-making is shaped by the interplay of individual cognitive trade-offs.
- Understanding individual differences in speed-accuracy is vital for comprehending social behaviour and collective intelligence.
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